US8220600B2 - Internally ventilated disc brake - Google Patents

Internally ventilated disc brake Download PDF

Info

Publication number
US8220600B2
US8220600B2 US11/878,152 US87815207A US8220600B2 US 8220600 B2 US8220600 B2 US 8220600B2 US 87815207 A US87815207 A US 87815207A US 8220600 B2 US8220600 B2 US 8220600B2
Authority
US
United States
Prior art keywords
heat dissipating
dissipating element
friction rings
ribs
molding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US11/878,152
Other versions
US20080017460A1 (en
Inventor
Alexander Prahst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Assigned to DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT reassignment DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PRAHST, ALEXANDER
Publication of US20080017460A1 publication Critical patent/US20080017460A1/en
Assigned to DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT (COMPANY NUMBER 722287) reassignment DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT (COMPANY NUMBER 722287) MERGER (SEE DOCUMENT FOR DETAILS). Assignors: DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT
Assigned to PORSCHE ZWISCHENHOLDING GMBH reassignment PORSCHE ZWISCHENHOLDING GMBH MERGER (SEE DOCUMENT FOR DETAILS). Assignors: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT (COMPANY NO. 722287)
Assigned to DR. ING H.C. F. PORSCHE AKTIENGESELLSCHAFT reassignment DR. ING H.C. F. PORSCHE AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: PORSCHE ZWISCHENHOLDING GMBH
Application granted granted Critical
Publication of US8220600B2 publication Critical patent/US8220600B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D65/84—Features relating to cooling for disc brakes
    • F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/1328—Structure internal cavities, e.g. cooling channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0007—Casting
    • F16D2250/0015—Casting around inserts

Definitions

  • the present invention relates to an internally ventilated disc brake having a brake disc, which consists of two friction rings, which are arranged spaced apart by means of ribs, between which are formed a plurality of air cooling channels, at least one heat dissipating element being arranged between the friction rings.
  • An object of the invention is to provide an internally ventilated disc brake that enables an improved dissipation of heat from the brake disc with simultaneously a simpler and more economical design.
  • the foregoing objective has been achieved based on the recognition that at the existing rate of air flow the internal cooling of the brake disc may be increased, if the air contact surface of the cooling air channels is enlarged.
  • the present invention solves this problem in that, during the manufacturing process of an internally ventilated disc brake, at least one heat dissipating element, that is to be cast or molded into the brake disc is assigned to a molding that forms the brake disc.
  • the heat dissipating element is disposed, according to the present invention, in the parting plane or the center plane of the molding and is cast into the molding, at least in certain places. This provides that the heat generated by friction at the friction rings, is radiated or transferred to the heat dissipating element and from there can be carried away with the cooling air.
  • the heat dissipating element may be advantageously disposed in the molding so that at the same time it projects, at least in certain places, into at least one cooling air channel of the brake disc.
  • the heat dissipating element is constructed or disposed in the molding such that, following the manufacturing process of the brake disc, the heat dissipating element projects into a plurality of cooling air channels or into all of the cooling air channels formed on the brake disc.
  • the early insertion or incorporation of the heat dissipating element into the molding, as early as during the casting operation or the manufacturing process of the brake disc, makes it possible to realize an especially simple and inexpensive and, thus, extremely effective configuration of a brake disc provided with a heat dissipating element.
  • the manufacturing of the molding with an integrated heat dissipating element is carried out in a single molding process without having to finish the heat dissipating element itself at a later date.
  • Arranging the heat dissipating element in the parting plane of the molding (this plane extending substantially parallel to the friction rings) has the advantage that the heat dissipating element in this position can develop very good efficiency, since, as a result, the air contact surface of the cooling air channels is very effectively enlarged.
  • the radial reach of the heat dissipating element may conform to the radial reach of the ribs and/or the radial reach of the cooling air channels.
  • the specific configuration of the ribs and/or the cooling air channels themselves is unimportant to the scope of the invention because the heat dissipating element can be adapted in virtually any arbitrary way to the ribs and/or the cooling air channels.
  • the concept of a parting plane is defined as the parting plane of a mold for manufacturing the molding. This parting plane is advantageously at the same time the center plane of the molding. In manufacturing the molding, the heat dissipating element may be placed in this parting plane and held there during the manufacturing process.
  • the present invention provides that the heat dissipating element exhibits a cross section preferably in the shape of an annular ring and is constructed essentially as a disk-shaped and/or plate-shaped component. This guarantees an especially simple and, in addition, an especially optimal manufacturing process.
  • the heat dissipating element itself may be constructed as a single walled and/or a double walled component.
  • a single wall configuration guarantees a very simple and inexpensive manufacture of the heat dissipating element, whereas the double wall configuration may exhibit an even better heat dissipation value.
  • the heat dissipating element can exhibit material protrusions and/or outwardly curved sections of material in the area of the cooling air channels.
  • the material protrusions and/or the outwardly curved sections of material may be made preferably by way of a punching, compression molding or embossing process.
  • a plurality of material protrusions and/or outwardly curved sections of material may be provided quickly and simply on the heat dissipating element. It is also contemplated, however, to construct the material protrusions as separate components that may be, for example, subsequently welded, soldered and/or riveted on the outside of the heat dissipating element.
  • the material protrusions are constructed preferably in a knob-like manner.
  • the material protrusions can also be constructed in a cone-like or pin-like manner.
  • the outwardly curved sections of material may be constructed substantially in a web-like or tab-like manner. Compared to smooth components, the material protrusions and/or the outwardly curved sections of material make it possible to obtain a heat dissipation behavior and/or flow behavior that is improved a second time.
  • the heat dissipating element can be provided with cavities and/or perforations at least in the area of the ribs, provided on the friction rings, in order to guarantee a safe and reliable connection between the two friction rings.
  • the cavities and/or perforations can be adapted advantageously in shape and number corresponding to the ribs provided on the friction rings.
  • An especially currently preferred embodiment is to make the heat dissipating element of sheet metal, in particular of aluminum, steel, copper or their alloys.
  • a heat dissipating element that is made of sheet metal has a weight advantage, is economical to make and, in addition, is easy to process.
  • the heat dissipating element should also especially preferably exhibit a higher heat coefficient than the friction ring, respectively the molding.
  • FIG. 1 is a schematic perspective view of an internally ventilated disc brake with an integrated heat dissipating element according to the present invention.
  • FIG. 2 is a side view of an axial exterior sub-area of the disc brake, shown in FIG. 1 .
  • FIG. 3 is a detail of a radial section of the disc brake 1 , show in FIG. 1 .
  • FIG. 4 is a side view of an axial exterior sub-area of a disc brake with a second embodiment of a heat dissipating element.
  • FIG. 5 is a side view of an axial exterior sub-area of a disc brake with a third embodiment of a heat dissipating element.
  • FIG. 6 is a side view of an axial exterior sub-area of a disc brake with a fourth embodiment of a heat dissipating element.
  • the internally ventilated disc brake 1 shown in FIG. 1 includes a brake disc which has first and second friction rings 2 , 3 that interact in a well-known manner with the brake pads.
  • the first friction ring 2 is connected to the second friction ring 3 by a plurality of ribs 4 , between which a plurality of cooling air channels 5 are formed.
  • an air current is generated between the ribs 4 to carry away the heat generated by the friction between the brake pads and the friction rings 2 , 3 of the brake disc during the braking action. Thereby, cooling of the disc brake 1 takes place.
  • the brake disc has a heat dissipating element 6 .
  • the heat dissipating element 6 and the friction rings 2 , 3 and/or the brake disc form a substantially integral molding 7 designated generally numeral.
  • the heat dissipating element 6 is disposed or cast into the molding 7 so as to project, at least in certain areas, into the brake disc cooling air channels 5 . Therefore, the heat dissipating element 6 is configured so as to run essentially parallel to the friction rings 2 , 3 in the parting and/or center plane 8 of the molding 7 .
  • the heat dissipating element 6 has a substantially circular cross section and is constructed as a plate-shaped component. Hence, it is contemplated to make the plate-shaped component from a metal sheet or the like. It is also contemplated to construct the heat dissipating element from several individual parts and/or to provide several identical or non-identical heat dissipating elements in the brake disc.
  • the configuration of the heat dissipating element may be adapted substantially to the air cooling channel that runs in the brake disc.
  • the wall thickness of the component or its axial reach conforms preferably to the axial reach of the air cooling channels 5 .
  • the heat dissipating element 5 is, however, constructed preferably to guarantee adequate flow behavior between the exterior walls 9 of the air cooling channels 5 and the exterior sides of the heat dissipating element 6 .
  • the heat dissipating element 6 has cavities and/or perforations 10 in the area of the ribs 4 that prevent the ribs 4 from being separated by the heat dissipating element 6 during the manufacturing or casting process and/or result in just an inadequate positive connection between the friction rings 2 , 3 .
  • the cavities and/or the perforations 10 are adapted in shape and number to the ribs 4 , provided on the friction rings 2 , 3 , and/or to the molded elements for forming the ribs 4 during the manufacturing process and guarantee a material-fitting connection between the friction rings 2 , 3 , on one hand, and a shape-fitting connection between the ribs 4 and the heat dissipating element 6 .
  • FIG. 2 is an enlarged side view of an axial exterior sub-area of the disc brake shown in FIG. 1 .
  • the heat dissipating element 6 is shown between the brake disc and/or between the friction rings 2 , 3 running parallel to the friction rings 2 , 3 in the parting plane 8 of the molding and/or the brake disc.
  • the heat dissipating element 6 is formed as a one-walled plate-shaped component and has perforations 10 in the area of the ribs 4 .
  • the heat dissipating element 6 has the effect that the heat generated at the brake disc is radiated over the friction rings 2 , 3 to the heat dissipating element 6 and from there may be carried away in turn by cooling air flowing through the cooling air channels 5 .
  • FIG. 3 is a schematic drawing of a detail of a radial section of the brake disc and/or the disc brake 1 shown in FIG. 1 , with a view of a subsection of the periphery of the heat dissipating element 6 .
  • the ribs 4 and the cooling air channels 5 are shown as well as the perforations 10 that are provided in the area of the ribs 4 .
  • the perforations 10 are constructed in this embodiment as oblong holes and are adapted to the contour, or rather the configuration, of the ribs 4 .
  • it is also contemplated to construct the perforations and/or the cavities for example, as boreholes.
  • the perforations and/or the cavities themselves may be, for example, punched, drilled and/or milled into the heat dissipating element.
  • FIG. 4 depicts a second embodiment of a heat dissipating element 11 having material protrusions 12 constructed substantially as knobs and disposed on both exterior sides of the heat dissipating element 11 .
  • the material protrusions 12 may be provided merely in a singular or solitary manner on the radial exterior side of the heat dissipating element 11 , or they may be disposed on both sides of the heat dissipating element so as to extend over the entire area of the cooling air channel and be distributed over the entire area of the exterior of the heat dissipating element 11 .
  • the material protrusions 12 are configured as material protrusions, folded out of the actual heat dissipating element 11 .
  • the material protrusions 12 can be made through a punching, compression molding or embossing process, thereby also forming folded-out tabs.
  • FIG. 5 shows a third embodiment of a heat dissipating element 13 constructed as a multi-walled or double walled component.
  • the heat dissipating element 13 is made of two main ribs 14 , 15 , between which a plurality of cross struts 16 are disposed. Furthermore, the heat dissipating element 13 has web-like outwardly curved sections of material 17 folded out of the main ribs 14 , 15 in a punching or compression molding process. Here, too, it is contemplated to connect the outwardly curved material sections 17 afterwards as separate components to the main ribs 14 , 15 .
  • the advantage of this construction lies in the feature that, due to the doubled wall configuration and the outwardly curved material sections, the heat dissipating element 13 has a heat dissipating behavior and/or flow behavior that is improved a second time as compared to components with a single wall.
  • a fourth embodiment of a heat dissipating element 18 shown in FIG. 6 is also a single wall component that has outwardly curved sections of material 19 configured as tabs and/or wedge formations.
  • the outwardly curved material 19 sections are folded out of the plate-shaped component in the punching or bending process and are exhibited in essence at an angle of 90 deg., relative to the exterior side 20 of the heat dissipating element 18 .
  • the heat dissipating element 18 has outwardly curved material sections 21 in the area of the ribs 4 . The outwardly curved material sections guarantee an improved hold in the molding.
  • the inner surface can be significantly enlarged and the air flow or the air swirl rate can be increased in the cooling air channels (the air flow or swirl being important for heat transfer), to influence the interface structure of the air flow and, as a result, to significantly increase the heat transmission coefficient at the heat dissipating element.
  • the constructions that are shown here are not regarded in any way as exhaustive and are intended only to show possible embodiments of an internally ventilated disc brake comprising an integrated heat dissipating element, according to the invention.

Abstract

An internally ventilated disc brake comprising a brake disc, having two friction rings that are spaced apart by ribs. Air cooling channels are formed between the ribs with at least one heat dissipating element provided between the friction rings. The two friction rings and the heat dissipating element form an essentially integral molding so that the heat dissipating element is cast into the molding at least in certain areas. The heat dissipating element projects into at least one cooling air channel at least in certain areas and is disposed substantially in a parting plane of the molding, the parting plane extending parallel to the friction rings.

Description

RELATED APPLICATIONS
This application claims the benefit of priority to German patent application number 10 2006 033 772.7, filed Jul. 21, 2006, the disclosure of which is incorporated by reference herein in its entirety.
BACKGROUND AND SUMMARY OF THE INVENTION
The present invention relates to an internally ventilated disc brake having a brake disc, which consists of two friction rings, which are arranged spaced apart by means of ribs, between which are formed a plurality of air cooling channels, at least one heat dissipating element being arranged between the friction rings.
During the disc braking action heat is generated by the brake pads in the friction rings of the brake disc. This generated heat must be continuously dissipated for the operating safety of the disc brake. To fulfill this purpose, there are, for example, systems that include a heat dissipating element in a molding adapted to the shape of a cooling air channel and which later, after the manufacturing process of the brake disc, may be placed stationarily inside the cooling air channel. Such prior art systems are, however, very complicated and exhibit at most only a relatively unsatisfactory heat dissipating behavior.
An object of the invention is to provide an internally ventilated disc brake that enables an improved dissipation of heat from the brake disc with simultaneously a simpler and more economical design.
The foregoing objective has been achieved based on the recognition that at the existing rate of air flow the internal cooling of the brake disc may be increased, if the air contact surface of the cooling air channels is enlarged. The present invention solves this problem in that, during the manufacturing process of an internally ventilated disc brake, at least one heat dissipating element, that is to be cast or molded into the brake disc is assigned to a molding that forms the brake disc. The heat dissipating element is disposed, according to the present invention, in the parting plane or the center plane of the molding and is cast into the molding, at least in certain places. This provides that the heat generated by friction at the friction rings, is radiated or transferred to the heat dissipating element and from there can be carried away with the cooling air. The heat dissipating element may be advantageously disposed in the molding so that at the same time it projects, at least in certain places, into at least one cooling air channel of the brake disc. However, it is regarded as especially advantageous if the heat dissipating element is constructed or disposed in the molding such that, following the manufacturing process of the brake disc, the heat dissipating element projects into a plurality of cooling air channels or into all of the cooling air channels formed on the brake disc.
The early insertion or incorporation of the heat dissipating element into the molding, as early as during the casting operation or the manufacturing process of the brake disc, makes it possible to realize an especially simple and inexpensive and, thus, extremely effective configuration of a brake disc provided with a heat dissipating element. Thus, the manufacturing of the molding with an integrated heat dissipating element is carried out in a single molding process without having to finish the heat dissipating element itself at a later date. Arranging the heat dissipating element in the parting plane of the molding (this plane extending substantially parallel to the friction rings) has the advantage that the heat dissipating element in this position can develop very good efficiency, since, as a result, the air contact surface of the cooling air channels is very effectively enlarged.
The radial reach of the heat dissipating element may conform to the radial reach of the ribs and/or the radial reach of the cooling air channels. The specific configuration of the ribs and/or the cooling air channels themselves is unimportant to the scope of the invention because the heat dissipating element can be adapted in virtually any arbitrary way to the ribs and/or the cooling air channels. In this context the concept of a parting plane is defined as the parting plane of a mold for manufacturing the molding. This parting plane is advantageously at the same time the center plane of the molding. In manufacturing the molding, the heat dissipating element may be placed in this parting plane and held there during the manufacturing process.
The present invention provides that the heat dissipating element exhibits a cross section preferably in the shape of an annular ring and is constructed essentially as a disk-shaped and/or plate-shaped component. This guarantees an especially simple and, in addition, an especially optimal manufacturing process.
The heat dissipating element itself may be constructed as a single walled and/or a double walled component. A single wall configuration guarantees a very simple and inexpensive manufacture of the heat dissipating element, whereas the double wall configuration may exhibit an even better heat dissipation value.
Preferably, the heat dissipating element can exhibit material protrusions and/or outwardly curved sections of material in the area of the cooling air channels. The material protrusions and/or the outwardly curved sections of material may be made preferably by way of a punching, compression molding or embossing process. Thus, a plurality of material protrusions and/or outwardly curved sections of material may be provided quickly and simply on the heat dissipating element. It is also contemplated, however, to construct the material protrusions as separate components that may be, for example, subsequently welded, soldered and/or riveted on the outside of the heat dissipating element.
In this connection, the material protrusions are constructed preferably in a knob-like manner. The material protrusions can also be constructed in a cone-like or pin-like manner. In contrast, the outwardly curved sections of material may be constructed substantially in a web-like or tab-like manner. Compared to smooth components, the material protrusions and/or the outwardly curved sections of material make it possible to obtain a heat dissipation behavior and/or flow behavior that is improved a second time.
Furthermore, the heat dissipating element can be provided with cavities and/or perforations at least in the area of the ribs, provided on the friction rings, in order to guarantee a safe and reliable connection between the two friction rings. The cavities and/or perforations can be adapted advantageously in shape and number corresponding to the ribs provided on the friction rings.
An especially currently preferred embodiment is to make the heat dissipating element of sheet metal, in particular of aluminum, steel, copper or their alloys. A heat dissipating element that is made of sheet metal has a weight advantage, is economical to make and, in addition, is easy to process. The heat dissipating element should also especially preferably exhibit a higher heat coefficient than the friction ring, respectively the molding.
Other objects, advantages and novel features of the present invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1. is a schematic perspective view of an internally ventilated disc brake with an integrated heat dissipating element according to the present invention.
FIG. 2 is a side view of an axial exterior sub-area of the disc brake, shown in FIG. 1.
FIG. 3 is a detail of a radial section of the disc brake 1, show in FIG. 1.
FIG. 4 is a side view of an axial exterior sub-area of a disc brake with a second embodiment of a heat dissipating element.
FIG. 5 is a side view of an axial exterior sub-area of a disc brake with a third embodiment of a heat dissipating element.
FIG. 6 is a side view of an axial exterior sub-area of a disc brake with a fourth embodiment of a heat dissipating element.
 DETAILED DESCRIPTION OF THE DRAWINGS
The internally ventilated disc brake 1 shown in FIG. 1, includes a brake disc which has first and second friction rings 2, 3 that interact in a well-known manner with the brake pads. The first friction ring 2 is connected to the second friction ring 3 by a plurality of ribs 4, between which a plurality of cooling air channels 5 are formed. At the brake disc rotating in the direction R, an air current is generated between the ribs 4 to carry away the heat generated by the friction between the brake pads and the friction rings 2, 3 of the brake disc during the braking action. Thereby, cooling of the disc brake 1 takes place.
In order to enhance the air flow rate of the internal cooling of the brake disc or rather in order to enlarge the air-cooled surface of the cooling air channels 5, the brake disc has a heat dissipating element 6. The heat dissipating element 6 and the friction rings 2, 3 and/or the brake disc form a substantially integral molding 7 designated generally numeral.
The heat dissipating element 6 is disposed or cast into the molding 7 so as to project, at least in certain areas, into the brake disc cooling air channels 5. Therefore, the heat dissipating element 6 is configured so as to run essentially parallel to the friction rings 2, 3 in the parting and/or center plane 8 of the molding 7. The heat dissipating element 6 has a substantially circular cross section and is constructed as a plate-shaped component. Hence, it is contemplated to make the plate-shaped component from a metal sheet or the like. It is also contemplated to construct the heat dissipating element from several individual parts and/or to provide several identical or non-identical heat dissipating elements in the brake disc. In this respect, the configuration of the heat dissipating element may be adapted substantially to the air cooling channel that runs in the brake disc. The wall thickness of the component or its axial reach conforms preferably to the axial reach of the air cooling channels 5. The heat dissipating element 5 is, however, constructed preferably to guarantee adequate flow behavior between the exterior walls 9 of the air cooling channels 5 and the exterior sides of the heat dissipating element 6.
The heat dissipating element 6 has cavities and/or perforations 10 in the area of the ribs 4 that prevent the ribs 4 from being separated by the heat dissipating element 6 during the manufacturing or casting process and/or result in just an inadequate positive connection between the friction rings 2, 3. The cavities and/or the perforations 10 are adapted in shape and number to the ribs 4, provided on the friction rings 2, 3, and/or to the molded elements for forming the ribs 4 during the manufacturing process and guarantee a material-fitting connection between the friction rings 2, 3, on one hand, and a shape-fitting connection between the ribs 4 and the heat dissipating element 6.
FIG. 2 is an enlarged side view of an axial exterior sub-area of the disc brake shown in FIG. 1. The heat dissipating element 6 is shown between the brake disc and/or between the friction rings 2, 3 running parallel to the friction rings 2, 3 in the parting plane 8 of the molding and/or the brake disc. The heat dissipating element 6 is formed as a one-walled plate-shaped component and has perforations 10 in the area of the ribs 4. The heat dissipating element 6 has the effect that the heat generated at the brake disc is radiated over the friction rings 2, 3 to the heat dissipating element 6 and from there may be carried away in turn by cooling air flowing through the cooling air channels 5.
FIG. 3 is a schematic drawing of a detail of a radial section of the brake disc and/or the disc brake 1 shown in FIG. 1, with a view of a subsection of the periphery of the heat dissipating element 6. The ribs 4 and the cooling air channels 5, are shown as well as the perforations 10 that are provided in the area of the ribs 4. The perforations 10 are constructed in this embodiment as oblong holes and are adapted to the contour, or rather the configuration, of the ribs 4. However, it is also contemplated to construct the perforations and/or the cavities, for example, as boreholes. The perforations and/or the cavities themselves may be, for example, punched, drilled and/or milled into the heat dissipating element.
FIG. 4 depicts a second embodiment of a heat dissipating element 11 having material protrusions 12 constructed substantially as knobs and disposed on both exterior sides of the heat dissipating element 11. The material protrusions 12 may be provided merely in a singular or solitary manner on the radial exterior side of the heat dissipating element 11, or they may be disposed on both sides of the heat dissipating element so as to extend over the entire area of the cooling air channel and be distributed over the entire area of the exterior of the heat dissipating element 11. In this case the material protrusions 12 are configured as material protrusions, folded out of the actual heat dissipating element 11. For example, the material protrusions 12 can be made through a punching, compression molding or embossing process, thereby also forming folded-out tabs.
FIG. 5 shows a third embodiment of a heat dissipating element 13 constructed as a multi-walled or double walled component. The heat dissipating element 13 is made of two main ribs 14, 15, between which a plurality of cross struts 16 are disposed. Furthermore, the heat dissipating element 13 has web-like outwardly curved sections of material 17 folded out of the main ribs 14, 15 in a punching or compression molding process. Here, too, it is contemplated to connect the outwardly curved material sections 17 afterwards as separate components to the main ribs 14, 15. The advantage of this construction lies in the feature that, due to the doubled wall configuration and the outwardly curved material sections, the heat dissipating element 13 has a heat dissipating behavior and/or flow behavior that is improved a second time as compared to components with a single wall.
A fourth embodiment of a heat dissipating element 18 shown in FIG. 6 is also a single wall component that has outwardly curved sections of material 19 configured as tabs and/or wedge formations. The outwardly curved material 19 sections are folded out of the plate-shaped component in the punching or bending process and are exhibited in essence at an angle of 90 deg., relative to the exterior side 20 of the heat dissipating element 18. Furthermore, the heat dissipating element 18 has outwardly curved material sections 21 in the area of the ribs 4. The outwardly curved material sections guarantee an improved hold in the molding.
With the aid of the various configurations of the heat dissipating elements, as shown in FIGS. 1 to 6, the inner surface can be significantly enlarged and the air flow or the air swirl rate can be increased in the cooling air channels (the air flow or swirl being important for heat transfer), to influence the interface structure of the air flow and, as a result, to significantly increase the heat transmission coefficient at the heat dissipating element. The constructions that are shown here are not regarded in any way as exhaustive and are intended only to show possible embodiments of an internally ventilated disc brake comprising an integrated heat dissipating element, according to the invention.
The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.

Claims (7)

1. Internally ventilated disc brake, comprising:
a brake disc having two friction rings only spaced apart by ribs, a plurality of air cooling channels formed between the ribs and at least one heat dissipating element arranged between the friction rings wherein the two friction rings and the heat dissipating element comprise an integral molding so that the at least one heat dissipating element is cast into the molding in at least several areas, the at least one heat dissipating element projects into at least one of the brake disc cooling air channels in at least several areas, the at least one heat dissipating element is disposed substantially in a parting plane of the molding, said parting plane running parallel to the friction rings, the at least one heat dissipating element is configured as a double walled component formed of two main ribs and a plurality of cross struts disposed between the two main ribs, the heat dissipating element having an annular ring cross sectional shape configured substantially as a disc-shaped and/or plate-shaped component, the heat dissipating element running in the parting plane spaced from inner walls of the friction rings.
2. Disc brake as claimed in claim 1, wherein the at least one heat dissipating element has at least one of material protrusions and outwardly curved material sections of material in an area of the air cooling channels, the material protrusions and/or the outwardly curved material sections being punched, compressed molded or embossed.
3. Disc brake as claimed in claim 1, wherein the at least one dissipating element is sheet metal.
4. Disc brake as claimed in claim 3, wherein the sheet metal is aluminum steel, copper or alloys thereof.
5. Disc brake as claimed in claim 1, wherein the at least one heat dissipating element is constructed to have a higher heat coefficient than that of the friction ring, respectively the molding.
6. An internally ventilated disc brake, comprising:
two friction rings having inner walls disposed opposite each other;
ribs;
at least one heat dissipating element configured as a double walled component formed of two main ribs and a plurality of cross struts disposed between said two main ribs, said at least one heat dissipating element is provided with at least one of cavities and perforations in at least an area of the ribs on the friction rings;
said two friction rings only spaced apart by said ribs, a plurality of air cooling channels formed between said ribs and said at least one heat dissipating element disposed between said friction rings;
said two friction rings and said heat dissipating element defining an integral molding so that said at least one heat dissipating element is cast into said integral molding in at least several areas, said at least one heat dissipating element projecting into at least one of said brake disc cooling air channels in at least several areas, said at least one heat dissipating element disposed substantially in a parting plane of said integral molding, said parting plane running parallel to said two friction rings, said heat dissipating element running in said parting plane spaced from said inner walls of said friction rings.
7. Disc brake as claimed in claim 6, wherein the cavities and/or perforations are adapted in shape and number to the ribs.
US11/878,152 2006-07-21 2007-07-20 Internally ventilated disc brake Active 2029-04-27 US8220600B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006033772 2006-07-21
DE102006033772.7 2006-07-21
DE102006033772A DE102006033772A1 (en) 2006-07-21 2006-07-21 Internally ventilated disc brake

Publications (2)

Publication Number Publication Date
US20080017460A1 US20080017460A1 (en) 2008-01-24
US8220600B2 true US8220600B2 (en) 2012-07-17

Family

ID=38608943

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/878,152 Active 2029-04-27 US8220600B2 (en) 2006-07-21 2007-07-20 Internally ventilated disc brake

Country Status (6)

Country Link
US (1) US8220600B2 (en)
EP (1) EP1881224B1 (en)
JP (1) JP2008025838A (en)
KR (1) KR20080008985A (en)
CN (1) CN101122312B (en)
DE (1) DE102006033772A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8091609B2 (en) * 2008-01-04 2012-01-10 GM Global Technology Operations LLC Method of forming casting with frictional damping insert
DE102009010973A1 (en) 2009-02-27 2010-09-02 Bayerische Motoren Werke Aktiengesellschaft Internally ventilated brake disc
RU2577159C2 (en) * 2010-06-04 2016-03-10 Френи Брембо С.П.А. Disk of disk brake
KR101348539B1 (en) * 2012-02-22 2014-01-09 ( 주 ) 화신 Front axle disc brake system for commercial vehicles
DE102014213402A1 (en) * 2014-07-10 2016-01-14 Robert Bosch Gmbh Brake disk for a motor vehicle, braking device
ITUB20155214A1 (en) * 2015-10-19 2017-04-19 Grimeca S R L DISC BRAKE.
CN111207168A (en) * 2015-11-30 2020-05-29 江苏鼎泰工程材料有限公司 Split wheel-mounted brake disc for urban fast rail train and high-speed motor train unit train
DE102015226450A1 (en) * 2015-12-22 2017-06-22 Bayerische Motoren Werke Aktiengesellschaft Internally ventilated brake disc
KR101866046B1 (en) 2016-08-22 2018-06-08 현대자동차주식회사 Brake disk having double cooling structure
DE102016117779A1 (en) * 2016-09-21 2018-03-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Brake disc for a disc brake and disc brake
DE102016222822A1 (en) * 2016-11-18 2018-05-24 Gustav Magenwirth Gmbh & Co. Kg brake disc
CN108223627A (en) * 2016-12-15 2018-06-29 通富热处理(昆山)有限公司 Automobile brake disc and preparation method thereof
DE102018105568B4 (en) * 2018-03-12 2022-06-02 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH brake disc and disc brake
CN108839512A (en) * 2018-06-20 2018-11-20 安徽安凯汽车股份有限公司 A kind of bridge brake disc and wheel hub entire combination part
CN112771283A (en) * 2018-10-09 2021-05-07 澳大利亚盘式制动器有限公司 Disk brake rotor and method for manufacturing same
CN109458420B (en) * 2018-12-30 2021-07-23 河北百龙汽车配件股份有限公司 But rapid cooling's car brake disc
IT201900008922A1 (en) * 2019-06-13 2020-12-13 Freni Brembo Spa Method for making a disc brake disc
CN114641625A (en) * 2019-10-02 2022-06-17 乐姆宝公开有限公司 Braking band for disc of ventilated-type disc brake

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2368621A (en) 1942-12-30 1945-02-06 American Steel Foundries Brake rotor
US2410195A (en) * 1942-07-08 1946-10-29 American Steel Foundries Rotor and method of making
US2464754A (en) 1944-08-21 1949-03-15 American Steel Foundries Brake rotor
US3142364A (en) * 1963-02-18 1964-07-28 Mikkelson Clarence Melvin Air circulating brake shield
US3391763A (en) * 1967-02-14 1968-07-09 Kelsey Hayes Co Brake disk
US3623579A (en) * 1969-09-26 1971-11-30 Kelsey Hayes Co Fabricated rotor for a disk brake assembly
US3732953A (en) * 1970-02-16 1973-05-15 Merlin Gerin Rotatable friction plate assembly and method of making thereof
DE3740309A1 (en) 1987-11-27 1989-06-08 Porsche Ag Internally ventilated disc brake
EP0352502A1 (en) 1988-07-08 1990-01-31 Schwäbische Hüttenwerke Gesellschaft mit beschränkter Haftung Brake disc for disc brakes
JPH0828613A (en) * 1994-07-21 1996-02-02 Aisin Takaoka Ltd Ventilated disc
EP0701072A1 (en) 1994-09-06 1996-03-13 Ford Motor Company Limited Brake rotor
FR2746156A1 (en) 1996-03-13 1997-09-19 Peugeot Disc brake for motor vehicle
JP2001159435A (en) 1999-12-02 2001-06-12 Yutaka Giken Co Ltd Air-cooled brake disc
DE20105756U1 (en) 2001-04-02 2001-06-21 Yeh Te Lung Disc brake
JP2003278810A (en) 2002-03-20 2003-10-02 Yutaka Giken Co Ltd Ventilated disk brake
DE102005033352A1 (en) 2005-07-16 2007-01-18 Volkswagen Ag Internally-ventilated brake disc for vehicles, includes stamped sheet metal disc between main friction discs, to increase cooling surface area

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6336730A (en) * 1986-08-01 1988-02-17 ダイワ精工株式会社 Drag force measuring apparatus of fishing reel
JPH0432085Y2 (en) * 1989-05-29 1992-07-31
JPH07224868A (en) * 1994-02-10 1995-08-22 Toyota Motor Corp Disc rotor for disc brake device
DE10041646A1 (en) * 2000-08-24 2002-03-07 Volkswagen Ag Internally ventilated brake disk has circular or annular recesses in friction rings in region of ventilation channel

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410195A (en) * 1942-07-08 1946-10-29 American Steel Foundries Rotor and method of making
US2368621A (en) 1942-12-30 1945-02-06 American Steel Foundries Brake rotor
US2464754A (en) 1944-08-21 1949-03-15 American Steel Foundries Brake rotor
US3142364A (en) * 1963-02-18 1964-07-28 Mikkelson Clarence Melvin Air circulating brake shield
US3391763A (en) * 1967-02-14 1968-07-09 Kelsey Hayes Co Brake disk
US3623579A (en) * 1969-09-26 1971-11-30 Kelsey Hayes Co Fabricated rotor for a disk brake assembly
US3732953A (en) * 1970-02-16 1973-05-15 Merlin Gerin Rotatable friction plate assembly and method of making thereof
DE3740309A1 (en) 1987-11-27 1989-06-08 Porsche Ag Internally ventilated disc brake
EP0352502A1 (en) 1988-07-08 1990-01-31 Schwäbische Hüttenwerke Gesellschaft mit beschränkter Haftung Brake disc for disc brakes
US5107966A (en) 1988-07-08 1992-04-28 Schwabische Huttenwerke Gmbh Brake disk for disk brakes
JPH0828613A (en) * 1994-07-21 1996-02-02 Aisin Takaoka Ltd Ventilated disc
EP0701072A1 (en) 1994-09-06 1996-03-13 Ford Motor Company Limited Brake rotor
FR2746156A1 (en) 1996-03-13 1997-09-19 Peugeot Disc brake for motor vehicle
JP2001159435A (en) 1999-12-02 2001-06-12 Yutaka Giken Co Ltd Air-cooled brake disc
DE20105756U1 (en) 2001-04-02 2001-06-21 Yeh Te Lung Disc brake
JP2003278810A (en) 2002-03-20 2003-10-02 Yutaka Giken Co Ltd Ventilated disk brake
DE102005033352A1 (en) 2005-07-16 2007-01-18 Volkswagen Ag Internally-ventilated brake disc for vehicles, includes stamped sheet metal disc between main friction discs, to increase cooling surface area

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
European Search Report dated Jun. 23, 2009.
German Search Report dated Apr. 3, 2008 with an English translation (Nine (9) pages).

Also Published As

Publication number Publication date
KR20080008985A (en) 2008-01-24
EP1881224B1 (en) 2013-01-02
CN101122312B (en) 2012-11-14
EP1881224A3 (en) 2009-08-05
DE102006033772A1 (en) 2008-01-31
JP2008025838A (en) 2008-02-07
US20080017460A1 (en) 2008-01-24
EP1881224A2 (en) 2008-01-23
CN101122312A (en) 2008-02-13

Similar Documents

Publication Publication Date Title
US8220600B2 (en) Internally ventilated disc brake
RU2677836C2 (en) Brake disc (versions) and method for manufacture thereof
US7063130B2 (en) Circular heat sink assembly
US6164423A (en) Vented rotor for caliper disc brakes and the like
US9574632B2 (en) Self-cooling brake disc assembly
US20120255820A1 (en) Segmented brake rotor with externally vented carrier
KR101964125B1 (en) Brake Disc
TWI537491B (en) Brake pad assembly and heat dissipation structure thereof
US6145585A (en) Motor housing with invertedly disposed T-grooves for quick dissipation of heat
US9488238B2 (en) Composite rotor
US20180238340A1 (en) Blower apparatus
KR20060050520A (en) Drum furnished with ventilation means, and brake furnished with such a drum
KR101866046B1 (en) Brake disk having double cooling structure
JP4013233B2 (en) Motor frame structure
JP2001355711A5 (en)
US7166944B2 (en) Cooling plate for alternator rectifier
JP4253618B2 (en) Fan guard
US20150168082A1 (en) Heat dissipating fin and heat dissipating device
CN206909011U (en) Radiator and frequency converter
US20050126869A1 (en) Disk type brake structure
JP2006114567A (en) Heat sink equipped with fin and its manufacturing method
EP3159197B1 (en) Valve element of a valve arrangement
CN109844349B (en) Brake disc for a disc brake and disc brake
JPH0828613A (en) Ventilated disc
US11510337B2 (en) Fan-equipped heatsink

Legal Events

Date Code Title Description
AS Assignment

Owner name: DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT, GERMAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PRAHST, ALEXANDER;REEL/FRAME:019870/0444

Effective date: 20070905

AS Assignment

Owner name: DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT (COMPAN

Free format text: MERGER;ASSIGNOR:DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT;REEL/FRAME:021184/0926

Effective date: 20070427

AS Assignment

Owner name: PORSCHE ZWISCHENHOLDING GMBH, GERMANY

Free format text: MERGER;ASSIGNOR:DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT (COMPANY NO. 722287);REEL/FRAME:024684/0871

Effective date: 20091125

AS Assignment

Owner name: DR. ING H.C. F. PORSCHE AKTIENGESELLSCHAFT, GERMAN

Free format text: CHANGE OF NAME;ASSIGNOR:PORSCHE ZWISCHENHOLDING GMBH;REEL/FRAME:024689/0278

Effective date: 20091130

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 8

FEPP Fee payment procedure

Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY